Motor-driven bogie for a streetcar

Abstract

A powered bogie for a railway vehicle, including one or more motors mounted on the bogie chassis, the front and rear reducing gears being arranged between, on the one hand, a longitudinal plane midway between the two front wheels and midway between the two rear wheels and, on the other hand, a longitudinal plane passing through the front wheel and the rear wheel situated on the same, first transverse side of the bogie is provided.

The invention claimed is: 
     
       1. A powered bogie for a railway vehicle, the bogie comprising:
 a bogie chassis; 
 two front wheels transversely spaced apart from one another and two rear wheels transversely spaced apart from one another, the front and rear wheels being connected to the bogie chassis, the front wheels being longitudinally spaced apart from the rear wheels; 
 one or two driving motors; and 
 a transmission comprising a front reducing gear for coupling the front wheels to the motor or one of the motors and a rear reducing gear for coupling the rear wheels to the motor or one of the motors; 
 the one or two motors being mounted on the bogie chassis, 
 the one or two motors and the front and rear reducing gears being arranged between a first longitudinal plane and a second longitudinal plane, the first longitudinal plane passing midway between the two front wheels and midway between the two rear wheels, the second longitudinal plane passing through the front wheel and the rear wheel situated on a same, first transverse side of the bogie, the one or two motors being aligned longitudinally between the front and rear reducing gears. 
 
     
     
       2. The bogie according to  claim 1 , wherein the front and rear reducing gears are arranged in positions symmetrical to one another about a transverse plane midway between the front and rear wheels. 
     
     
       3. The bogie according to  claim 1 , further comprising braking elements for the front and rear wheels and secondary suspension components suitable for suspending a railway vehicle body on the bogie chassis, the braking elements and the secondary suspension components being situated outside the bogie relative to the wheels. 
     
     
       4. The bogie according to  claim 1  further comprising primary suspension components situated between the transmission and the bogie chassis, the primary suspension components being placed inside the bogie relative to the wheels. 
     
     
       5. The bogie according to  claim 4 , wherein at least some primary suspension components are low components, each situated entirely below a level between 200 mm and 400 mm relative to the rolling plane of the bogie, for front and rear wheels with a diameter of 590 mm. 
     
     
       6. A railway vehicle comprising:
 a body which is elongate in shape in a principal direction, provided with a body chassis; and 
 at least one bogie connected to the body and arranged below the body chassis comprising:
 a bogie chassis; 
 two front wheels transversely spaced apart from one another and two rear wheels transversely spaced apart from one another, the front and rear wheels being connected to the bogie chassis, the front wheels being longitudinally spaced apart from the rear wheels; 
 one or two driving motors; and 
 a transmission comprising a front reducing gear for coupling the front wheels to the motor or one of the motors and a rear reducing gear for coupling the rear wheels to the motor or one of the motors; 
 the one or two motors being mounted on the bogie chassis, 
 the one or two motors and the front and rear reducing gears being arranged between a first longitudinal plane and a second longitudinal plane, the first longitudinal plane passing midway between the two front wheels and midway between the two rear wheels, the second longitudinal plane passing through the front wheel and the rear wheel situated on a same, first transverse side of the bogie, the one or two motors being aligned longitudinally between the front and rear reducing gears; 
 
 the body chassis comprising a first raised portion above the front and rear wheels situated on the first transverse side of the bogie and above the front and rear reducing gears, a second raised portion at least above the front and rear wheels situated on a second transverse side of the bogie opposite the first transverse side, and a lowered portion forming a circulation corridor, substantially parallel to the principal direction, between the first and second raised portions. 
 
     
     
       7. The vehicle according to  claim 6 , wherein the circulation corridor is offset transversely towards the second raised portion relative to a median plane of the body and parallel to the principal direction. 
     
     
       8. The vehicle according to  claim 6 , wherein the bogie is connected to the body by a pivot connector. 
     
     
       9. The vehicle according to  claim 6 , wherein the bogie is non-pivoting relative to the body. 
     
     
       10. The vehicle according to  claim 6 , wherein the circulation corridor extends from the front and rear reducing gears on the first transverse side to the front and rear wheels situated on the second transverse side of the bogie. 
     
     
       11. The vehicle according to  claim 6 , wherein the bogie comprises primary suspension components arranged directly inside the bogie relative to the front and rear wheels situated on the second side of the bogie, the circulation corridor extending from the front and rear reducing gears to said primary suspension components.